text: /*
   * This file is subject to the terms and conditions of the GNU General Public
   * License.  See the file COPYING in the main directory of this archive
   * for more details.
   */
  
  #include <linux/module.h>
  #include <asm/uaccess.h>
  
  unsigned long __generic_copy_from_user(void *to, const void __user *from,
  				       unsigned long n)
  {
  	unsigned long tmp, res;
  
  	asm volatile ("\n"
  		"	tst.l	%0\n"
  		"	jeq	2f\n"
  		"1:	"MOVES".l	(%1)+,%3\n"
  		"	move.l	%3,(%2)+\n"
  		"	subq.l	#1,%0\n"
  		"	jne	1b\n"
  		"2:	btst	#1,%5\n"
  		"	jeq	4f\n"
  		"3:	"MOVES".w	(%1)+,%3\n"
  		"	move.w	%3,(%2)+\n"
  		"4:	btst	#0,%5\n"
  		"	jeq	6f\n"
  		"5:	"MOVES".b	(%1)+,%3\n"
  		"	move.b  %3,(%2)+\n"
  		"6:\n"
  		"	.section .fixup,\"ax\"\n"
  		"	.even\n"
  		"10:	move.l	%0,%3\n"
  		"7:	clr.l	(%2)+\n"
  		"	subq.l	#1,%3\n"
  		"	jne	7b\n"
  		"	lsl.l	#2,%0\n"
  		"	btst	#1,%5\n"
  		"	jeq	8f\n"
  		"30:	clr.w	(%2)+\n"
  		"	addq.l	#2,%0\n"
  		"8:	btst	#0,%5\n"
  		"	jeq	6b\n"
  		"50:	clr.b	(%2)+\n"
  		"	addq.l	#1,%0\n"
  		"	jra	6b\n"
  		"	.previous\n"
  		"\n"
  		"	.section __ex_table,\"a\"\n"
  		"	.align	4\n"
  		"	.long	1b,10b\n"
  		"	.long	3b,30b\n"
  		"	.long	5b,50b\n"
  		"	.previous"
  		: "=d" (res), "+a" (from), "+a" (to), "=&d" (tmp)
  		: "0" (n / 4), "d" (n & 3));
  
  	return res;
  }
  EXPORT_SYMBOL(__generic_copy_from_user);
  
  unsigned long __generic_copy_to_user(void __user *to, const void *from,
  				     unsigned long n)
  {
  	unsigned long tmp, res;
  
  	asm volatile ("\n"
  		"	tst.l	%0\n"
  		"	jeq	4f\n"
  		"1:	move.l	(%1)+,%3\n"
  		"2:	"MOVES".l	%3,(%2)+\n"
  		"3:	subq.l	#1,%0\n"
  		"	jne	1b\n"
  		"4:	btst	#1,%5\n"
  		"	jeq	6f\n"
  		"	move.w	(%1)+,%3\n"
  		"5:	"MOVES".w	%3,(%2)+\n"
  		"6:	btst	#0,%5\n"
  		"	jeq	8f\n"
  		"	move.b	(%1)+,%3\n"
  		"7:	"MOVES".b  %3,(%2)+\n"
  		"8:\n"
  		"	.section .fixup,\"ax\"\n"
  		"	.even\n"
  		"20:	lsl.l	#2,%0\n"
  		"50:	add.l	%5,%0\n"
  		"	jra	8b\n"
  		"	.previous\n"
  		"\n"
  		"	.section __ex_table,\"a\"\n"
  		"	.align	4\n"
  		"	.long	2b,20b\n"
  		"	.long	3b,20b\n"
  		"	.long	5b,50b\n"
  		"	.long	6b,50b\n"
  		"	.long	7b,50b\n"
  		"	.long	8b,50b\n"
  		"	.previous"
  		: "=d" (res), "+a" (from), "+a" (to), "=&d" (tmp)
  		: "0" (n / 4), "d" (n & 3));
  
  	return res;
  }
  EXPORT_SYMBOL(__generic_copy_to_user);
  
  /*
   * Zero Userspace
   */
  
  unsigned long __clear_user(void __user *to, unsigned long n)
  {
  	unsigned long res;
  
  	asm volatile ("\n"
  		"	tst.l	%0\n"
  		"	jeq	3f\n"
  		"1:	"MOVES".l	%2,(%1)+\n"
  		"2:	subq.l	#1,%0\n"
  		"	jne	1b\n"
  		"3:	btst	#1,%4\n"
  		"	jeq	5f\n"
  		"4:	"MOVES".w	%2,(%1)+\n"
  		"5:	btst	#0,%4\n"
  		"	jeq	7f\n"
  		"6:	"MOVES".b	%2,(%1)\n"
  		"7:\n"
  		"	.section .fixup,\"ax\"\n"
  		"	.even\n"
  		"10:	lsl.l	#2,%0\n"
  		"40:	add.l	%4,%0\n"
  		"	jra	7b\n"
  		"	.previous\n"
  		"\n"
  		"	.section __ex_table,\"a\"\n"
  		"	.align	4\n"
  		"	.long	1b,10b\n"
  		"	.long	2b,10b\n"
  		"	.long	4b,40b\n"
  		"	.long	5b,40b\n"
  		"	.long	6b,40b\n"
  		"	.long	7b,40b\n"
  		"	.previous"
  		: "=d" (res), "+a" (to)
  		: "d" (0), "0" (n / 4), "d" (n & 3));
  
      return res;
  }
  EXPORT_SYMBOL(__clear_user);
  